The Science of Caffeine, the World's Most Popular Drug (image) American Chemical Society Share Print E-Mail Caption It seems there are new caffeine-infused products hitting the shelves every day. From energy drinks to gum and even jerky, our love affair with that little molecule shows no signs of slowing. In the American Chemical Society's latest Reactions video, we look at the science behind the world's most popular drug, including why it keeps you awake and how much caffeine is too much. The video is available at http://youtu.be/YuJOhpNS0IY. Credit The American Chemical Society Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.